Messages in this thread | | | Date | Sat, 14 Nov 2009 03:00:59 +0900 (JST) | From | KOSAKI Motohiro <> | Subject | Re: [PATCH 2/6] mm: mlocking in try_to_unmap_one |
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> On Fri, Nov 13, 2009 at 05:26:14PM +0900, KOSAKI Motohiro wrote: > > Probably we can remove VM_NONLINEAR perfectly. I've never seen real user of it. > > Do you mean as a whole or in the mlock logic? databases are using > remap_file_pages on 32bit archs to avoid generating zillon of vmas on > tmpfs scattered mappings. On 64bits it could only be useful to some > emulators but with real shadow paging and nonlinear rmap already > created on shadow pagetables, it looks pretty useless on 64bit archs > to me.
Hehe, you point out kosaki is stupid and knoledgeless. thanks correct me.
Probaby we have to maintain VM_NONLINEAR for one or two year. two years later, nobody use database on 32bit machine. (low-end DB might be use on 32bit, but that's ok. it doesn't use VM_NONLINEAR)
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